© ISO 2016 Wood based panels — Particleboard Panneaux à base de bois — Panneaux de particules INTERNATIONAL STANDARD ISO 16893 First edition 2016 01 15 Reference number ISO 16893 2016(E) Corrected ver[.]
INTERNATIONAL STANDARD ISO 6893 First edition 01 6-01 -1 Corrected version 01 6-03 -1 Wood-based panels — Particleboard Panneaux base de bois — Panneaux de particules Reference number ISO 6893 : 01 6(E) © ISO 01 ISO 16893 :2 016(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2016, Published in Switzerland All rights reserved Unless otherwise speci fied, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission Permission can be requested from either ISO at the address below or ISO’s member body in the country of the requester ISO copyright office Ch de Blandonnet • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii © ISO 2016 – All rights reserved ISO 16893 :2 016(E) Contents Page Foreword iv Scope Normative references Terms, de initions and abbreviated terms f 3.1 Terms and de finitions Abbreviated terms Classi ications 4.1 f 4.2 Additional classi fications Structural grades 4.4 Tests related to each class of particleboard 5.1 Mandatory tests Optional tests Classi fication matrices Uses 4.3 Thickness ranges Expression of speci ication limits and general requirements f 7.1 7.2 7.3 Expression of speci fication limits Lower speci fication limits Upper speci fication limits 7.5 7.6 Density variation, dimension and moisture content requirements Formaldehyde requirements 7.4 Moisture resistance requirement options 7.7 Load bearing particleboard Speci ic property requirements 8.1 8.2 8.3 8.4 8.5 f Requirements for general purpose particleboard for use in dry conditions (P-GP REG) Requirements for furniture grade particleboard for use in dry conditions (P-FN REG) Requirements for load bearing particleboard for use in dry conditions (P-LB REG) Requirements for heavy-duty load bearing particleboard for use in dry conditions (P-HLB REG) Requirements for general purpose particleboard for use in temperate humid conditions (P-GP MR1 ) 8.6 Requirements for furniture grade particleboard for use in temperate humid conditions (P-FN MR1 ) 8.7 8.8 8.9 Requirements for load bearing particleboard for use in temperate humid conditions (P-LB MR1 ) 1 Requirements for heavy-duty load bearing particleboard for use in temperate humid conditions (P-HLB MR1 ) Requirements for general purpose particleboard for use in high tropical humid conditions (P-GP MR2 ) 8.1 Requirements for furniture grade particleboard for use in high tropical humid conditions (P-FN MR2 ) 8.1 8.12 Requirements for load bearing particleboard for use in tropical humid conditions (P-LB MR2 ) Requirements for heavy-duty load bearing particleboard for use in high tropical humid conditions (P-HLB MR2 ) Marking 16 Annex A (normative) Calculation of 5-percentile and 95-percentile values © ISO 01 – All rights reserved 17 iii ISO 16893 :2 016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work of preparing International Standards is normally carried out through ISO technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part In particular the different approval criteria needed for the different types of ISO documents should be noted This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part (see www.iso.org/directives) Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights ISO shall not be held responsible for identifying any or all such patent rights Details of any patent rights identi fied during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents) Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement For an explanation on the meaning of ISO speci fic terms and expressions related to conformity assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers to Trade (TB T) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 89, Wood-based pan els, Subcommittee SC , Particle boards This first edition cancels and replaces ISO 16893-1:2008 and ISO 16893-2:2010, which have been technically revised This corrected version of ISO 16893: 2016 incorporates the following corrections The revision statement has been corrected in the Foreword, correctly identifying the documents which this International Standard cancels and replaces The footer a in Table has been amended and changed to NOTE The expression of thickness ranges have been corrected in the headers in Tables to 16 iv © ISO 01 – All rights reserved INTERNATIONAL STANDARD ISO 16893 :2 016(E) Wood-based panels — Particleboard Scope This International Standard speci fies a classi fication matrix and the related mandatory tests and thickness ranges to be applied to wood-based particleboard for general purposes, furniture, load- bearing applications and heavy-duty load-bearing applications It then provides the manufacturing property requirements for these types of uncoated particleboard The values listed in this International Standard relate to product properties used to classify particleboards into one of four grades (P-GP, P-FN, P-LB or P-HLB, see Clause 3) , for use in three service conditions (REG, MR1 and MR2) The values are not characteristic values to be used for design purposes Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies ISO 33 40, Fibre building boards — Determination of sand content ISO 9426, Wood-based panels — Determination of dimensions of panels ISO 9427, Wood-based panels — Determination of density Wood-based panels — Determination of formaldehyde release — Part 1: Formaldehyde emission by the 1-cubic-metre chamber method ISO 12460 -1, ISO 12460 -3 , Wood-based panels — Determination of formaldehyde release — Part 3: Gas analysis method ISO 12460 - 4, Wood-based panels — Determination of formaldehyde release — Part 4: Desiccator method ISO 12460 -5, Wood-based panels — Determination of formaldehyde release — Part 5: Extraction method (called the perforator method) ISO 16572 , Timber structures — Wood-based panels — Test methods for structural properties ISO 16978, Wood-based panels — Determination ofmodulus ofelasticity in bending and ofbending strength ISO 16979, Wood-based panels — Determination of moisture content ISO 16981, Wood-based panels — Determination of surface soundness ISO 16983 , Wood-based panels — Determination of swelling in thickness after immersion in water ISO 1698 4, Wood-based panels — Determination of tensile strength perpendicular to the plane of the panel ISO 16985, Wood-based panels — Determination of dimensional changes associated with changes in relative humidity ISO 16987, Wood-based panels — Determination of moisture resistance under cyclic test conditions ISO 16998, Wood-based panels — Determination of moisture resistance — Boil test ISO 17064, Wood-based panels — Fibreboard, particleboard and oriented strand board (OSB) — Vocabulary ISO 20585: 2005 , Wood-based panels — Determination of wet bending strength after immersion in water at 70 degrees C or 100 degrees C (boiling temperature) © ISO 01 – All rights reserved ISO 16893 :2 016(E) I S O 752 , Wood-based pan els — Determin ation of resistan ce to a xial with drawal of screws 3 Terms, de initions and abbreviated terms f 3.1 Terms and de initions f For the purposes of this document, the terms and de finitions given in ISO 17064 apply Abbreviated terms For the purposes of this document, the following abbreviated terms apply E XT e x te r i o r F fu n g i re s i s ta nt FN fu r n i tu re FR f GP ge ne r a l p u r p o s e H LB ire retardant heavy-duty load bearing I i n s e c t re s i s t a n t LB l o ad b e a r i n g M R1 mo i s tu re re s i s ta n t — te mp e r ate M R2 mo i s tu re re s i s ta n t — tro p ic a l P p a r tic le b o a rd RE G re g u l a r δ th i ckne s s 4 Classi ications f 4.1 Classi ication matrices f An overall classi fication matrix, which includes all major classes available at the time of publication, allows for future classes to be included as they become available on is s ho w n in Tab le Tab le i n te r n ati o n a l m a rke ts Not all products in the matrix are currently available or under development For example, there are no existing exterior condition products Realistic property tables can only be developed for existing products The remainder are potential future products and property tables will be developed when necessary © I S O – Al l ri gh ts re s e rve d ISO 16893 :2 016(E) Table 1 — Classi ication matrix for particleboard f Type Service conditions Dry conditions (regular) P- GP R E G ge n e r a l p u r p o s e Ap p l i c a ti o n G e ne r a l u s e s , e x a mp l e s ve n e e r g r ad e P-FN R E G fu r n i tu r e g r ade Humid conditions — temperate Humid conditions — tropical M R1 ge n e r a l p u r p o s e M R ge n e r a l p u r p o s e G ene l u s e s G enera l u s e s M R1 fu r n i tu r e g r a de M R fu r n i t u r e g r ade High humid and exterior conditions N o e x i s ti n g p r o duc t C a r c a s s , fu r n i tu r e , C a r c a s s , fu r n i tu r e , C ab i n e t s fo r k i tc h e n c ab i ne ts fo r k i tc h e n Ap p l i c a ti o n e x a mp l e s c ab i n e t s , s u b s tr a te a n d b ath r o o m ; for any decorative finish P-LB mo u lde d ch a i r a nd p a r ti ti o n s , s u b s tr ate fo r any decorative finish RE G lo ad b e a r i n g Ap p l i c a ti o n N o e x i s ti n g p r o duc t a n d b a th r o o m , to i l e t M R1 l o ad b e a r i n g Domestic flooring, Domestic flooring, t ab l e M R2 lo ad b e a r i n g Domestic flooring, s he l v i n g , r o o f s he l v i n g , r o o f de c ki n g , s h e l v i n g , ge n e r a l N o e x i s ti n g p r o du c t d e c k i n g , wa l l e xa m p l e s wa l l s he a th i n g , ge n e r a l c o n s tr uc ti o n s he ath i n g , ge n e r a l c o n s tr uc ti o n c o n s tr uc ti o n REG heavy-duty MR1 heavy-duty MR2 heavy-duty l o ad b e a r i n g l o ad b e a r i n g l o ad b e a r i n g Industrial flooring, Industrial flooring, Industrial flooring, s he l v i n g s he l v i n g , b e a m s s hel vi ng P-HLB Ap p l i c a ti o n e xa m p l e s 4.2 N o e x i s ti n g p r o du c t Uses Products speci fied in this document have the following applications dry conditions only re g u l a r RE G mo i s t u re re s i s t a n t — te mp e rate M R1 te mp e rate hu m i d c o nd i tio n s mo i s tu re re s i s t a n t — tro p ic a l M R2 tro p ic a l hu m i d c o nd i tio n s e x te r io r E XT e x p o s e d to we athe r c o n d i tio n s , ab o ve g ro u nd lo ad b e a r i n g LB s tr uc tu l o r lo ad b e a r i n g heavy-duty load bearing H LB ge ne l p u r p o s e GP heavy structural or load bearing applications not requiring the speci fic properties of fu r n i tu re o r lo ad- b e a r i n g g rade s fu r n i tu re FN in furniture manufacture, cabinet making, fitments, joinery, bases for surface decorative treatment 4.3 Additional classi ications f If additional attribute classi fications are used, such as fire retardant (FR), insect resistant (I) and fungi resistant (F), claimed performance shall be firmed by appropriate testing NOTE Relevant tests and performance requirements can be speci fied by national standards and codes © I S O – Al l ri gh ts re s e rve d ISO 16893 :2 016(E) 4.4 Structural grades When a product is used in a load-bearing or structural application, additional information shall be available in the form of characteristic values derived from structural testing (ISO 16572) , experimental test results or history of use to validate its performance under the proposed conditions It should be noted that engineering design methods not provide for design for high humid service conditions The inclusion of P-LB and P-HLB grades in the high humid section of the classi fication matrix ) is on the basis that performance is validated by experimental test results or history of use (Table Tests related to each class of particleboard 5.1 Mandatory tests The mandatory tests shown in Table shall be applied to the various particleboard grades identi fied in Table All property requirements shall be met at dispatch from factory Property Table — Tests related to particleboard grades Method P- GP P-FN P-LB P-HLB Density variation ISO 427 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 Dimensions ISO 9426 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 Formaldehyde emission ISO 2460 -1 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 Moisture content ISO 16979 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 Internal bond s trength ISO 1698 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 ISO 16978 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 Modulus of elasticity ISO 16978 — REG MR1 MR2 REG MR1 MR2 REG MR1 MR2 Thickness swelling ISO 16983 MR1 MR2 MR1 MR2 REG MR1 MR2 REG MR1 MR2 ISO 16981 — REG MR1 MR2 — — MR1 MR2 MR1 MR2 MR1 MR2 MR1 MR2 Bending s trength — Modulus of rupture (MOR) Bending s tiffness — (MOE ) Surface soundness ISO 205 85 Mois ture resistance ISO 169 98 ISO 16987 5.2 Optional tests If information on additional properties is agreed between the user and manufacturer, it shall be determined using test method(s) nominated from ISO 33 40, ISO 16985 and/or ISO 2752 © ISO 01 – All rights reserved ISO 16893 :2 016(E) Thickness ranges Speci fication values shall be related to the ranges of thickness, δ, shown The speci fication of a particular thickness of product shall be determined by consulting the correct thickness range mm < mm < mm < mm < 20 mm < 25 mm < 32 mm < δ ≤ mm δ ≤ mm δ ≤ mm δ ≤ 13 mm δ ≤ 20 mm δ ≤ 25 mm δ ≤ 32 mm δ ≤ 40 mm δ > 40 mm 7 Expression of speci ication limits and general requirements f 7.1 Expression of speci ication limits f This International Standard may be used to evaluate groups of panels or production batches To evaluate a group of panels, this requires that a) the mandatory tests of Table be applied to samples of the group Conditioning of test specimens is required as speci fied in each test method, and b) the results of the tests be evaluated against the appropriate speci fication limits in Tables to 16, according to the product type and thickness range of the panels Tables and apply to all product types and thickness ranges of panels For density variation and dimensions ( Table ), speci fication limits are based on the mean values for individual panels (calculated in accordance with Annex A) and are maximum tolerances For formaldehyde emission, Table gives upper speci fication limits for individual panel results Speci fication limits in Tables to 16 are based on (lower) or 95 (upper) percentile expressions, according to and 7.2 Lower speci ication limits f The requirements in Tables to 16 are the lower speci fication limits for the following properties: a) bending strength — modulus of rupture (MOR); b) bending stiffness — modulus of elasticity (MOE); c) internal bond strength; d) surface soundness; e) internal bond strength after cyclic test; f) internal bond strength after boil test; g) wet bending strength The -percentile values based on the mean values for individual panels and calculated in accordance with Annex A shall be equal to or greater than the lower speci fication limits in Tables to 16 © ISO 01 – All rights reserved ISO 16893 :2 016(E) 7.3 Upper speci ication limits f The requirements in Tables to 16 are the upper speci fication limits for the following properties: a) thickness swelling after 24 h; b) thickness swelling after cyclic test The 95-percentile values based on the mean values for individual panels and calculated in accordance with Annex A shall be equal to or less than the upper speci fication limits in Tables to 16 7.4 Moisture resistance requirement options Requirements for moisture resistance are dependent upon the test method employed to assess this property Three alternative sets of requirements (Option 1, Option and Option 3) are set out in corresponding to the three principal recognized methods of evaluation It is necessary to show compliance with only one of these three options, as follows Tables to 16 — Option 1: Requirements apply to those particleboards subjected to a cyclic accelerated ageing test, followed by the determination of thickness swelling and internal bond strength, as described in ISO 16987 — Option 2: Requirements apply to those particleboards subjected to an accelerated ageing test, consisting of immersion in boiling water followed by determination of internal bond strength, as described in ISO 16998 — Option 3: Requirements apply to those particleboards subjected to an accelerated ageing test consisting of immersion in water at 70 °C followed by determination of the wet bending strength (MOR) as described in ISO 20585:2005, Method A NOTE Moisture resistance testing is not intended to prove durability of a new resin system, but to firm the correct processing of panels made from a resin system proven to provide the required durability 7.5 Density variation, dimension and moisture content requirements At least 95 % of the mean values of the individual panels shall be within the maximum tolerances stated in Table Table 3 — Requirements for density variation, dimensions and moisture content Property Density variation within panel Length and width Squareness Thickness — Unsanded panel — Sanded panel Moisture content (advisory only) Test method ISO 9427 ISO 9426 ISO 9426 ISO 9426 ISO 16979 Requirement ±10 % max from mean ±2 mm/m, max ±5 mm 12 −0,3 −0,5 +1,5 +1,7 ±0,3 ±0,3 to 14 % (see Note) NOTE This ISO Standard applies internationally Wood products attain a moisture content according to the temperature and relative humidity of their environment The upper limits of this moisture content range will only apply in hot, humid areas 7.6 Formaldehyde requirements Compliance with formaldehyde requirements may be firmed by applying only one test method of those listed in Table The reference chamber method can take up to four weeks for each test to © ISO 2016 – All rights reserved ISO 16893 :2 016(E) be completed The other tests are designated production control methods because one test may be completed within 24 h Each individual panel result shall comply with the speci fication limits stated in Table for the selected method Table 4 — Maximum limits of formaldehyde emission/content Property Method a Unit Requirement ISO 2460 -1 mg/m 0,1 24 Emission ISO 2460 -3 mg/m /h 3,5 Emission ISO 2460 - mg/L 0,7 Content ISO 2460 -5 mg/10 g 8,0 Emission NOTE National regulations may impose restrictions on the use of panels of particular formaldehyde emission levels NOTE If any other method is used for production control, correlations should be established with the reference chamber method to determine the emission value that is equivalent to the chamber method limit value stated in this table Correlations may be regional, national, company or plant speci fic as appropriate 7.7 Load bearing particleboard When particleboard is classi fied P-LB or P-HLB and nominated for load bearing applications, the characteristic strength and stiffness values shall be established based upon testing in accordance with ISO 16572 or equivalent ASTM or EN standards Alternatively, for speci fic load bearing applications (e.g walls, roofs, floors, joist webs), the load bearing particleboard shall meet the speci fic performance requirements for that intended application 8 Speci ic property requirements f 8.1 Requirements for general purpose particleboard for use in dry conditions (P-GP REG) The requirements for P-GP REG particleboard are listed in Table Table 5 — Requirements for P-GP REG particleboard Requirement Property Thickness ranges Test method mm, nominal Units ≤3 Bending s trength (MOR) Internal bond strength ISO 16978 ISO 1698 © ISO 01 – All rights reserved >3 >4 >6 >1 >20 >25 to to to to to to >32 ≤4 ≤6 ≤13 ≤20 ≤25 ≤32 ≤40 to > 40 MPa 11, 11 , 11 , 10, 10,0 9, 8, 7,0 5,5 MPa 0, 31 0, 31 0, 31 0, 0, 24 0, 20 0,17 0,14 0,14 ISO 16893 :2 016(E) 8.2 Requirements for furniture grade particleboard for use in dry conditions (P-FN REG) The requirements for P-FN REG particleboard are listed in Table Table 6 — Requirements for P-FN REG particleboard Requirement Property Bending strength (MOR) Modulus of elasticity (MOE) Internal bond strength Surface soundness Thickness ranges Test method ISO 16978 ISO 16978 ISO 16984 ISO 16981 Units ≤3 >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 >25 to to to to ≤13 ≤20 ≤25 MPa 13,0 13,0 12,0 11,0 11,0 10,5 ≤32 9,5 >32 to >40 ≤40 8,5 7,0 MPa 800 800 950 800 600 500 350 200 050 MPa 0,45 0,45 0,45 0,40 0,35 0,30 0,25 0,20 0,20 MPa 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 8.3 Requirements for load bearing particleboard for use in dry conditions (P-LB REG) The requirements for P-LB REG particleboard are listed in Table Table 7 — Requirements for P-LB REG particleboard Requirement Property Bending strength (MOR) Modulus of elasticity (MOE) Internal bond strength 24 h thickness swelling Thickness ranges Test method Units ≤3 ISO 16978 MPa 14,0 ISO 16978 MPa 800 ISO 16984 MPa 0,50 ISO 16983 % 25 >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 >25 to to to to ≤13 ≤20 ≤25 ≤32 15,0 16,0 15,0 15,0 13,0 11,0 >32 to >40 ≤40 8,0 7,0 950 200 200 100 900 700 200 200 0,45 0,45 0,40 0,35 0,30 0,25 0,20 0,20 25 21 19 16 16 16 15 14 © ISO 2016 – All rights reserved ISO 16893 :2 016(E) 8.4 Requirements for heavy-duty load bearing particleboard for use in dry conditions (P-HLB REG) The requirements for P-HLB REG particleboard are listed in Table Table 8 — Requirements for P-HLB REG particleboard Requirement Property Thickness ranges Test Units method ≤3 ISO 16978 MPa 17,0 ISO 16978 MPa 700 ISO 16984 MPa 0,70 ISO 16983 % 18 Bending strength (MOR) Modulus of elasticity (MOE) Internal bond strength 24 h thickness swelling >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 to to to ≤13 ≤20 ≤25 >25 to ≤32 >32 to ≤40 >40 20,0 20,0 20,0 18,0 16,0 15,0 14,0 12,0 800 900 150 900 550 400 200 050 0,65 0,65 0,60 0,50 0,40 0,35 0,30 0,25 18 16 16 15 15 15 14 14 8.5 Requirements for general purpose particleboard for use in temperate humid conditions (P-GP MR1) The requirements for P-GP MR1 particleboard are listed in Table Table 9 — Requirements for P-GP MR1 particleboard Requirement Property Thickness ranges Test method Bending strength (MOR) Internal bond strength 24 h thickness swelling Moisture resistance Option 1, cyclic test: ISO 16978 ISO 16984 ISO 16983 ISO Internal bond strength 16987 Thickness swelling Option 2, boil test: ISO Internal bond strength 16998 ISO Option 3: Wet 20585 bending strength Method A © ISO 2016 – All rights reserved Units ≤3 >3 to ≤4 >4 to ≤6 >6 to mm, nominal >13 >20 to to ≤13 ≤20 ≤25 >25 to ≤32 MPa 12,0 12,0 13,0 13,0 12,0 11,0 10,0 >32 to >40 7,0 5,5 ≤40 MPa 0,35 0,35 0,30 0,28 0,24 0,20 0,17 0,14 0,14 % 26 24 23 18 15 13 13 12 12 MPa 0,16 0,15 0,14 0,13 0,11 0,08 0,07 0,06 0,05 % 25 24 23 21 20 18 17 15 14 MPa 0,06 0,09 0,09 0,08 0,07 0,06 0,05 0,04 0,04 MPa 4,6 4,7 4,9 4,6 4,2 3,9 3,5 2,5 2,3 ISO 16893 :2 016(E) 8.6 Requirements for furniture grade particleboard for use in temperate humid conditions (P-FN MR1) The requirements for P-FN MR1 particleboard are listed in Table 10 Table 10 — Requirements for P-FN MR1 particleboard Requirement Property Bending strength (MOR) Modulus of elasticity (MOE) Internal bond strength Surface soundness 24 h thickness swelling Moisture resistance Thickness ranges Test method ISO 16978 ISO 16978 ISO 16984 ISO 16981 ISO 16983 Units ≤3 >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 >25 >32 to to to to to >40 ≤13 ≤20 ≤25 ≤32 ≤40 MPa 13,0 13,0 14,0 14,0 13,0 12,0 11,0 8,0 7,5 MPa 800 800 900 900 900 700 400 200 200 MPa 0,50 0,50 0,45 0,45 0,40 0,35 0,30 0,25 0,25 MPa 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 % 25 23 20 16 14 13 13 12 12 Option 1, cyclic test: ISO MPa 0,18 0,18 0,18 0,15 0,13 0,12 0,10 0,09 0,08 Internal bond strength 16987 % 15 15 20 18 16 14 13 11 11 Thickness swelling Option 2, boil test: ISO Internal bond strength 16998 MPa 0,09 0,09 0,09 0,09 0,08 0,07 0,07 0,06 0,06 ISO Option 3: Wet 20585 MPa 5,3 5,3 5,6 4,9 4,5 4,2 3,9 3,2 2,9 bending strength Method A 10 © ISO 2016 – All rights reserved ISO 16893 :2 016(E) 8.7 Requirements for load bearing particleboard for use in temperate humid conditions (P-LB MR1) The requirements for P-LB MR1 particleboard are listed in Table 11 Table 11 — Requirements for P-LB MR1 particleboard Requirement Property Thickness ranges Test method ISO Bending strength (MOR) 16978 Modulus of elasticity ISO (MOE) 16978 ISO Internal bond strength 16984 ISO 24 h thickness swelling 16983 Moisture resistance Units ≤3 >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 >25 >32 to to to to to >40 ≤13 ≤20 ≤25 ≤32 ≤40 MPa 16,0 18,0 19,0 17,0 16,0 14,0 12,0 9,0 9,0 MPa 000 400 450 450 400 100 900 550 550 MPa 0,50 0,50 0,45 0,45 0,40 0,35 0,30 0,30 0,25 % 16 16 14 13 11 11 11 10 Option 1, cyclic test: ISO MPa 0,30 0,30 0,30 0,20 0,20 0,18 0,16 0,14 0,12 Internal bond strength 16987 % 12 12 12 15 13 12 11 10 Thickness swelling Option 2, boil test: ISO Internal bond strength 16998 MPa 0,15 0,15 0,15 0,14 0,14 0,12 0,10 0,09 0,09 ISO Option 3: Wet 20585 MPa 6,0 6,5 6,7 6,4 5,6 4,9 4,2 3,6 3,4 bending strength Method A © ISO 2016 – All rights reserved 11 ISO 16893 :2 016(E) 8.8 Requirements for heavy-duty load bearing particleboard for use in temperate humid conditions (P-HLB MR1) The requirements for P-HLB MR1 particleboard are listed in Table 12 Table 12 — Requirements for P-HLB MR1 particleboard Requirement Property Bending strength (MOR) Modulus of elasticity (MOE) Internal bond strength 24 h thickness swelling Moisture resistance Thickness ranges Test method ISO 16978 ISO 16978 ISO 16984 ISO 16983 Units ≤3 >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 >25 >32 to to to to to >40 ≤13 ≤20 ≤25 ≤32 ≤40 MPa 18,0 20,0 21,0 21,0 19,0 18,0 16,0 14,0 13,0 MPa 900 000 100 000 900 700 400 200 200 MPa 0,80 0,75 0,75 0,75 0,70 0,65 0,60 0,45 0,40 % 12 10 10 10 10 10 10 9 Option 1, cyclic test: ISO MPa 0,45 0,45 0,40 0,34 0,32 0,29 0,27 0,20 0,20 Internal bond strength 16987 % 11 11 12 11 10 10 10 10 Thickness swelling Option 2, boil test: ISO Internal bond strength 16998 MPa 0,25 0,25 0,25 0,23 0,21 0,20 0,18 0,14 0,12 ISO Option 3: Wet 20585 MPa 6,5 7,3 7,7 7,7 7,0 6,3 6,0 5,0 4,5 bending strength Method A 12 © ISO 2016 – All rights reserved ISO 16893 :2 016(E) 8.9 Requirements for general purpose particleboard for use in high tropical humid conditions (P-GP MR2 ) The requirements for P-GP MR2 particleboard are listed in Table 13 Table 13 — Requirements for P-GP MR2 particleboard Requirement Property Thickness ranges Test method Units ≤32 >32 to ≤40 >40 MPa 15,0 14,0 14,0 13,0 12,0 11,0 10,0 7,0 5,5 ≤3 Bending strength (MOR) Internal bond strength 24 h thickness swelling Moisture resistance Option 1, cyclic test: Internal bond strength Thickness swell Option 2, boil test: Internal bond strength Option 3: Wet bending strength >3 to ≤4 >4 to mm, nominal >6 >13 >20 to to to ≤6 ≤13 ≤20 ≤25 >25 to ISO 16978 ISO 16984 ISO 16983 MPa 0,35 0,35 0,30 0,28 0,24 0,20 0,17 0,14 0,14 ISO 16987 MPa 0,21 0,20 0,19 0,17 0,14 0,11 0,10 0,09 0,08 % 16 15 14 13 12 11 10 % 20 16 14 12 12 10 10 ISO 16998 MPa 0,16 0,15 0,15 0,14 0,12 0,09 0,08 0,07 0,06 ISO 20585 MPa 7,5 7,0 7,0 6,5 6,0 5,5 5,0 3,5 2,7 Method A © ISO 2016 – All rights reserved 13 ISO 16893 :2 016(E) 8.10 Requirements for furniture grade particleboard for use in high tropical humid conditions (P-FN MR2 ) The requirements for P-FN MR2 particleboard are listed in Table 14 Table 14 — Requirements for P-FN MR2 particleboard Requirement Property Bending strength (MOR) Modulus of elasticity (MOE) Internal bond strength Surface soundness 24 h thickness swelling Moisture resistance Option 1, cyclic test: Internal bond strength Thickness swell Option 2, boil test: Internal bond strength Option 3: Wet bending strength 14 Thickness ranges Test method ISO 16978 ISO 16978 ISO 16984 ISO 16981 ISO 16983 ISO 16987 Units ≤3 >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 >25 >32 to to to to to >40 ≤13 ≤20 ≤25 ≤32 ≤40 MPa 20,0 18,0 17,0 16,0 15,0 13,0 12,0 10,0 8,0 MPa 300 200 100 000 900 700 600 600 400 MPa 0,50 0,50 0,45 0,45 0,40 0,35 0,30 0,25 0,25 MPa 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 % 18 16 14 12 12 10 10 MPa 0,25 0,24 0,23 0,22 0,18 0,16 0,14 0,12 0,10 % 16 14 13 12 11 10 MPa 0,24 0,23 0,22 0,22 0,20 0,17 0,15 0,14 0,12 ISO 16998 ISO 20585 MPa 10,0 9,0 Method A 8,5 8,0 7,5 6,5 6,0 5,0 4,0 © ISO 2016 – All rights reserved ISO 16893 :2 016(E) 8.11 Requirements for load bearing particleboard for use in tropical humid conditions (P-LB MR2 ) The requirements for P-LB MR2 particleboard are listed in Table 15 Table 15 — Requirements for P-LB MR2 particleboard Requirement Property Thickness ranges Test method ISO Bending strength (MOR) 16978 Modulus of elasticity ISO (MOE) 16978 ISO Internal bond strength 16984 ISO 24 h thickness swelling 16983 Moisture resistance Units ≤3 >3 to ≤4 >4 to ≤6 mm, nominal >6 >13 >20 >25 >32 to to to to to >40 ≤13 ≤20 ≤25 ≤32 ≤40 MPa 21,0 20,0 19,0 18,0 16,0 15,0 14,0 12,0 10,0 MPa 600 600 600 600 400 100 900 700 500 MPa 0,55 0,55 0,50 0,50 0,45 0,40 0,35 0,30 0,25 % 16 14 13 12 10 10 10 Option 1, cyclic test: ISO MPa 0,40 0,40 0,35 0,30 0,25 0,25 0,20 0,18 0,15 Internal bond strength 16987 % 12 11 10 10 9 Thickness swell Option 2, boil test: ISO Internal bond strength 16998 MPa 0,30 0,28 0,28 0,28 0,20 0,17 0,15 0,13 0,12 ISO Option 3: Wet 20585 MPa 10,5 10,0 9,5 9,0 8,0 7,5 7,0 6,0 5,0 bending strength Method A © ISO 2016 – All rights reserved 15 ISO 16893 :2 016(E) 8.12 Requirements for heavy-duty load bearing particleboard for use in high tropical humid conditions (P-HLB MR2) The requirements for P-HLB MR2 particleboard are listed in Table 16 Table 16 — Requirements for P-HLB MR2 particleboard Requirement Thickness ranges Property Test method Bending strength (MOR) Modulus of elasticity (MOE) Internal bond strength 24 h thickness swelling Moisture resistance Option 1, cyclic test: Internal bond strength Thickness swell Option 2, boil test: Internal bond strength Option 3: Wet bending strength Units ≤13 >13 to ≤20 mm, nominal >20 >25 to to ≤25 ≥6 to ≤32 >32 to ≤40 >40 ISO 16978 ISO 16978 ISO 16984 ISO 16983 MPa 22,0 20,0 18,0 17,0 16,0 14,0 MPa 350 100 900 800 600 400 MPa 0,75 0,70 0,65 0,60 0,50 0,45 % 8 7 ISO 16987 MPa % MPa 0,45 10 0,37 0,42 0,35 0,39 0,32 0,36 0,30 0,33 0,27 0,30 0,25 11,0 10,0 9,0 8,5 8,0 7,0 ISO 16998 ISO 20585 MPa Method A Marking Each panel or pack of panels shall be marked by the manufacturer either by direct indelible printing or by an adhesive label with at least the following information: a) the manufacturer’s name, trademark or identi fication mark speci fic to the production facility; c) the panel type, e.g P-FN MR1; e) the formaldehyde classi fication; f) the batch number or production week and year; b) a reference to this International Standard, i.e ISO 16893; d) the nominal thickness; g) additional attributes such as resistance to fire, insects or decay 16 © ISO 2016 – All rights reserved